Smelting-furnace.



PATENTED FEB. a, 1906. A. RPARTRIDGE. sMI-JLTING FURNACE. APPLIOATIDHFILED 0OT.28.19G4.

'a'ilitizezi i bied sid fievafian cf the 511105??? ii;

a Let-tars P ing wheeis 9.

ambia can be g a? paiciriiifi er abject a? my iiz' ef the E1221 7 ed 0head: fh

5 .aiinn, &: i Ga n 1 such apgrara gmnying drawing re i 13 a fertacaiseen and air-heaiing nwmsi 1' tidn tn Saki exlmusting, rain a ing mean:i "41' i having a2: m

in s.

tame, s0 Lha length iii b? iii film 7 cumivnscr, gm means of m'eai-iiwaste and leys 28 29. A belt from pulley 28 to a pulley 31 drives theshaft 32 of the exhaust-fan.

belt from ulley 29 to a pulle 33 drives the shaft 34 0' the ian-blower tis my intention to run the exhaust at a considerably higher speed thanthe blower, and I have in the drawings shown the belt-pulleys in suchproportions as to produce that result. lhis is because it is essentialto successful smelting that the gases be removed with the utmostcelerity ynd hence I have produced the main part of the draft by meansof the exhaustfan, and while the fun-blower undoubtedly assists thedraft its principal purpose is to sup )ly for combustion a large volumeof air at low pressure and in heated condition, for as the pipe 23,which leads from the fanblower, surrounds the outlet-pipe 17, whichcarries the intensely-hot products of combustion, the fresh air isheated and enters the space 5 at a high temperature. in this space itbecomes still hotter and is immediately drawn through. the pipes 16 andinto the air box, whence it enters the smelter in the desired heatedcondition in large volume and under low n'essure.

Where l ii h oxidation is required, as in making steel, 1. leave thespace between the crucible and smelter entirely open within the air-boxbut under some circumstances, in smelting lead or sulfid ores, when lowoxidation is requisite I have provided means for obstructing andbreaking up the supply of oxygen atits entrance to the smelter The verysimple device desi ned by me for this 36 and 37.

Having thus fully described my invention,

What 1 claim as new, and desire to secure by Letters Patent, is-

In combination with a smelter, having a double wall near its upper endforming a hot airspace, an outlet-pipe communicating with the interiorof the star an inlet-pipe concentric therewith and communicating withthe hot-air space, an exhaust-fan in connection with the outlet-pipe,and a itllhlDlUWPl in con net-Lion with the inlebpl )e.

In testimony whereoi l. have allixml my signature, in presence of twowitnesses, this 18th day of August, 1904.

ALLEN Rt PA RTE l DGE. Witnesses L. W. Selim, GEO. 'i. KNOX.

